使用rails 4，以简单的形式设计多态关联嵌套属性

本文介绍了使用rails 4，以简单的形式设计多态关联嵌套属性的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

这是我的代码：

用户：

class User< ActiveRecord :: Base devise：database_authenticatable，：rememberable，：trackable，，validatable belongs_to：loginable，polymorphic：true end

设计师：

设计师& ActiveRecord :: Base has_one：user，as：：loginable acceptance_nested_attributes_for：user end

布局：

<％= simple_form_for [：admin，@designer] ：html => {：class => 'form-horizo​​ntal'} do | f | ％GT; <％if f.error_notification％> < div class =alert alert-error淡入> < a class =closedata-dismiss =alerthref =＃>& times;< / a> <％= f.error_notification％> <％if @ designer.errors.any？ ％GT; < ul> <％@ designer.errors.full_messages.each do | msg | ％GT; < li><％= msg％>< / li> <％end％> < / ul> <％end％> < / div> <％end％> < div class =control-group> <％= f.label：profile_name，：class => 'control-label'％> < div class =controls> <％= f.text_field：profile_name，：class => 'text_field'％> < / div> < / div> <％= f.simple_fields_for users do | u | ％GT; < div class =control-group> <％= u.label：email，：class => 'control-label'％> < div class =controls> <％= u.text_field：email，：class => 'text_field'％> < / div> < / div> < div class =control-group> <％= u.label：password，：class => 'control-label'％> < div class =controls> <％= u.password_field：password，：class => 'text_field'％> < / div> < / div> < div class =control-group> <％= u.label：type，：class => 'control-label'％> < div class =controls> <％= u.input：role，：label => false do％> <％= u.select：role_id，Role.all.map {| r | [r.name，r.id]}％> <％end％> < / div> < / div> < div class =control-group> <％= u.label：firstname，：class => 'control-label'％> < div class =controls> <％= u.text_field：firstname，：class => 'text_field'％> < / div> < / div> <％end％> < div class =form-actions> <％= f.submit nil，：class => 'btn btn-primary'％> < / div> <％end％>

控制器：

code> def create @user = User.new（designer_params） @designer = Designer.new（designer_params） @ user.loginable = @designer respond_to do | format | 如果@ user.save！ &安培;&安培; @ designer.save！ format.html {redirect_to admin_designers_path，notice：'Designer was successfully created。'} format.json {render action：'show'，status：：created，location：admin_designer_path（@designer）} else format.html {render action：'new'} format.json {render json：[designer：@ designer.errors，user：@ user.errors]，status：：unprocessable_entity } end end end def designer_params params.permit（：profile_name，：user，user_attributes：[：email，，password，密码，：firstname，：lastname，：address，：邮政编码，：城市，国家，：角色，角色]] end

我的参数似乎忽略了用户属性，我只是因为某些原因看到个人资料名称。

有关如何修复的任何想法这将非常感谢

谢谢！

解决方案

我设法解决我自己的问题。所以我发布的答案希望拯救别人很多时间。

我最终为用户参数创建另一个私有方法

def designer_params params.require（：designer）.permit（：profile_name，user_attributes：[：email，：password，：password，：firstname， lastname，：address，：postalcode，：city，：country，，role，，role_id] end def user_params params [：designer] [：user_attributes]。 ，：password，：password，：firstname，：lastname，：address，：postalcode，：city，：country，，role，，role_id） end

然后使用这些来创建我的关系

def create @designer = Designer.new（designer_params） @user = User.new（user_params） @ user.loginable = @designer @ designer.save！ end

如果您无法查看嵌套表单，请确保使用 build_方法

def new @designer = Designer.new @user = @designer .build_user end

I am making a polymorphic association with devise and simple for but for some reason i cant get the params to work

here is my code:

User:

class User < ActiveRecord::Base devise :database_authenticatable, :rememberable, :trackable, :validatable belongs_to :loginable, polymorphic: true end

Designer:

class Designer < ActiveRecord::Base has_one :user, as: :loginable accepts_nested_attributes_for :user end

Layout:

<%= simple_form_for [:admin, @designer] , :html => { :class => 'form-horizontal' } do |f| %> <% if f.error_notification %> <div class="alert alert-error fade in"> <a class="close" data-dismiss="alert" href="#">&times;</a> <%= f.error_notification %> <% if @designer.errors.any? %> <ul> <% @designer.errors.full_messages.each do |msg| %> <li><%= msg %></li> <% end %> </ul> <% end %> </div> <% end %> <div class="control-group"> <%= f.label :profile_name, :class => 'control-label' %> <div class="controls"> <%= f.text_field :profile_name, :class => 'text_field' %> </div> </div> <%= f.simple_fields_for users do |u| %> <div class="control-group"> <%= u.label :email, :class => 'control-label' %> <div class="controls"> <%= u.text_field :email, :class => 'text_field' %> </div> </div> <div class="control-group"> <%= u.label :password, :class => 'control-label' %> <div class="controls"> <%= u.password_field :password, :class => 'text_field' %> </div> </div> <div class="control-group"> <%= u.label :type, :class => 'control-label' %> <div class="controls"> <%= u.input :role, :label => false do %> <%= u.select :role_id, Role.all.map { |r| [r.name, r.id] } %> <% end %> </div> </div> <div class="control-group"> <%= u.label :firstname, :class => 'control-label' %> <div class="controls"> <%= u.text_field :firstname, :class => 'text_field' %> </div> </div> <% end %> <div class="form-actions"> <%= f.submit nil, :class => 'btn btn-primary' %> </div> <% end %>

Controller:

def create @user = User.new(designer_params) @designer = Designer.new(designer_params) @user.loginable = @designer respond_to do |format| if @user.save! && @designer.save! format.html { redirect_to admin_designers_path, notice: 'Designer was successfully created.' } format.json { render action: 'show', status: :created, location: admin_designer_path(@designer) } else format.html { render action: 'new' } format.json { render json: [designer: @designer.errors, user: @user.errors], status: :unprocessable_entity } end end end def designer_params params.permit(:profile_name, :user, user_attributes: [:email, :password, :password, :firstname, :lastname, :address, :postalcode, :city, :country, :role, :role_id]) end

My params seems to ignore the user attributes, i only see profile name for some reason.

Any ideas on how to fix this would be greatly appreciated

Thanks!

解决方案

I managed to resolve my own issues. so i am posting the answer hoping to save someone else lots of time.

i ended up creating another private method for the user params

def designer_params params.require(:designer).permit(:profile_name, user_attributes: [:email, :password, :password, :firstname, :lastname, :address, :postalcode, :city, :country, :role, :role_id]) end def user_params params[:designer][:user_attributes].permit(:email, :password, :password, :firstname, :lastname, :address, :postalcode, :city, :country, :role, :role_id) end

and then using those to create my relationship

def create @designer = Designer.new(designer_params) @user = User.new(user_params) @user.loginable = @designer @designer.save! end

also if you are having trouble viewing the nested form make sure to use the build_ method

def new @designer = Designer.new @user = @designer.build_user end